There is so much to unpack about this phenomena.

Very leftist, very anti-rule, very pro-woke (which is a very strict rule)

And this group is very unaware of its impact. Like you said, the desert flat is cleaned up, but not everything around it. Stuff, and even people are discarded all about the area.

Same thing happens with tree-hugger conventions. They go to pristine forests, and leave tons of trash, a huge number of new trails that have to be fixed, and lots of people who came for the free food, with no where else to go.

And the burning man "special" pavilions with AC are infamous. You just need to be richer to enjoy the event.